Abstract: A bearing system includes a housing with first and second relief cuts, and a bearing assembly that includes an inner race and an outer race. An adjust screw contacts a preload spring positioned adjacent the outer race. The preload spring exerts a force on the outer race. The outer race includes a first and second edge, and a connecting portion. The first and second edges are positioned adjacent the first and second relief cuts respectively. The connecting portion contacts a bearing bore surface while the first and second edges of the outer race do not contact the bore surface.

Abstract: A retaining arrangement is provided for retaining a bearing around a stub shaft having a machined cavity and which includes a ring forming a stop for the bearing nut and a locking piece.

Abstract: An adjustable bearing spacer (12) includes a cylindrical outer body (42) having a first end (44) for abutment with a bearing cone (28) disposed within one end of a hub (10) and an adjustable ring (46) for abutment with an opposite bearing cone (30). The ring (46) is threadingly engaged with the outer body (42) so as to be extendable from an end (48) of the body (42) allowing adjustment of the length of the spacer (12). End (48) is provided with a plurality of evenly-spaced markings. Two of these markings are in the form of small holes into which the prongs of a tool can be inserted. End (58) of ring (46) is also provided with markings in the form of holes into which the prongs of a tool can be inserted. The markings form an indexing scale for providing an indication of the extension in the length of the spacer (12) when the ring (46) is screwed in or out. The degree of extension is calculated as follows E11=1/x.

Abstract: A ball bearing 36 supports a rotor 35 of an electromagnetic clutch 31 in such a manner that the rotor 35 can be rotated about the axis of the ball bearing 36. The ball bearing 36 includes an outer race 12, an inner race 13, a ball 14, and a retainer 15. The outer and inner races 12 and 13 are each formed in a circular-ring shape. The ball 14 is rollingably interposed between the outer and inner races 12 and 13. In the inner peripheral surface 16 and outer peripheral surface 17 of the outer and inner races 12 and 13, there are respectively formed grooves 12a and 13a each of which extends along the race peripheral direction and has an arc-shaped section. The grooves 12a and 13a are each formed in such a range in which their respective radii of curvature re and ri satisfy 1.0≦(re+ri)/Da≦0.9746 (Da/dm)−0.0304, where Da: the diameter of the ball, and dm: the mean value of the diameters of the inner and outer races of the ball bearing.

Abstract: A bicycle crank axle comprises an axle, which is provided with two fitting portions located at both ends thereof. Each of the two fitting portions is fitted into a tapered sleeve, which is in turn fitted into a fixation seat. The fixation seat is provided with a tapered center hole in which a tapered fixation ring, a tapered bearing seat, a C-shaped ring, a pillar holder of a tapered construction, a plurality of tapered pillars, a washer, and a fixation seat cover are provided. The tapered pillars are intimately held by the pillar holder to provide the axle with protection against idle running and mechanical wear.

Abstract: A nut with a coaxial bearing or dynamically brace-supporting independently-rotating, coaxial first and second cylindrical surfaces to each other. The nut has a fastener portion having a conventional nut configuration, and a bearing portion having a conventional bearing configuration. The fastener portion threadedly mounts to the threaded end of the independently-rotating, coaxial first cylindrical surface. The bearing portion is affixed to the fastener portion along an annular outer race, and supports an independently-rotating, coaxial second cylindrical surface along an annular inner race.

Abstract: A bearing system includes a housing with first and second relief cuts, and a bearing assembly that includes an inner race and an outer race. An adjust screw contacts a preload spring positioned adjacent the outer race. The preload spring exerts a force on the outer race. The outer race includes a first and second edge, and a connecting portion. The first and second edges are positioned adjacent the first and second relief cuts respectively. The connecting portion contacts a bearing bore surface while the first and second edges of the outer race do not contact the bore surface.

Abstract: An improved crank axle for bicycle is a hollow hub axle provided with a circle of tooth shape key slot at both ends respectively, arranged with a single roller bearing and the two parallel ball bearings and covered with an aluminum alloy cone-shaped sleeve. So that its can reduce the weight, facilitate assembling, keep axle rotation smoothly and receive loading strength well.

Abstract: A propeller blade retention assembly for use with a propeller having a hub rotatable about a propeller axis, is disclosed. The assembly includes a blade receiver for mounting the blade to the hub and an internal surface of a hub arm for interfacing the receiver with the hub. The receiver is positioned in the hub arm and is non-integral with the blade and the hub arm internal surface. A retention mechanism is used for retaining the blade receiver to the hub arm while allowing relative rotatable motion therebetween. A preload device is provided for preloading the retention mechanism prior to centrifugal loading during propeller blade operation. The blade is separable from the blade receiver without disturbing the operability of the retention mechanism.

Abstract: A bearing assembly adapted to be mounted on a shaft, the assembly including a sleeve having a frustoconical outer surface and a bore adapted to be placed on the shaft; and an inner ring defining a second bore, the second bore having a first portion which is engageable with the outer surface of the sleeve and the second bore having a second portion adjacent the first portion and extending at an angle radially outwardly from the first portion.

Abstract: In an assembly including preloaded bearings, a sleeve is provided and has an exterior surface and an externally threaded section adjacent to an end of the sleeve. At least two bearings, each having an inner bearing race, an outer bearing race, and a plurality of rolling elements positioned between the inner and outer bearing races, are slidably mounted on the exterior surface of the sleeve. The sleeve further includes a bore extending part-way into the sleeve adjacent to the externally threaded section, the bore defining inner interior surface. A bearing retainer is also provided and includes an internally threaded section engaged with the external threads of the sleeve for urging the inner bearing race of one of the bearings toward the inner bearing race of the other bearing, thereby preloading the bearings.

Abstract: A steering bearing assembly includes a lower race disposed to an end of a head tube through which a steerer tube extends, a handlebar stem mounted to the steerer tube, and an upper race disposed to the lower race with a ball bearing set rotatably received therebetween. The upper race has a neck portion extending upwardly therefrom which has at least two gaps defined longitudinally therein, a fastener securely mounted to the neck portion so as to position the steerer tube extending through the neck portion and the fastener is pushed downwardly by the handlebar stem.

Abstract: A journal for a head tube of a bicycle includes a lower race fitted on an upper end of the head tube through which a steerer tube extends, the lower race having a first annular recess defined therein for receiving a plurality of balls. An upper race is securely mounted on the steerer tube and an annular element is securely disposed between the balls and the lower race. The annular element has a skirt portion extending radially outwardly from an outer periphery thereof which extends above the lower race and a track portion formed on an inner periphery thereof for rotatably receiving the balls therein.

Abstract: A bearing device for an axle comprising an outer ring member, an inner ring member arranged coaxial with the outer ring member and relatively rotatably through a roller, and a rotational shaft member having the inner ring member integrally connected to at least a shaft end side portion by means of a nut engaged with a shaft end portion and being secured to the axle side at a counter shaft end side portion, comprising a locking means for enlarging a first thin-wall tubular portion formed in the shaft end portion of the rotational member and a second thin-wall tubular portion formed on the nut threadedly fitted in the shaft end portion of the rotational member outwardly in a diametrical direction to deform the first and second thin-wall tubular portions outwardly in a diametrical direction to thereby prevent looseness of the nut.

Abstract: A steering bearing assembly for a wheeled vehicle, which includes a steerer tube rotatably passing through a head tube of the wheeled vehicle by disposing an upper and a lower steering bearing assemblies therebetween, the assembly has an upper race and a lower race and a plurality of balls rotatably received therebetween. A washer and an absorbing element are disposed between the upper race and the steerer tube. A force exerting element exerts a downward force on the washer to set the upper race in position.

Abstract: A bicycle crank axle comprises two fitting shafts located respectively at both ends thereof. One of two fitting shafts is provided with a stopping block while another one of the two fitting shafts is provided with a threaded portion. Two fitting shafts are fitted respectively into a tapered sleeve engageable with a tapered bearing which is fastened with a tapered fixation seat. The threaded portion of the crank axle is engageable with a fastening nut by which the crank axle can be fixed with ease and precision.

Abstract: An adjusting device assembly for making, a manual adjustment of a bicycle head bowl bearing comprises a front fork upright tube inserted into a head tube in which a bearing bowl is received. A bearing is received in the bearing bowl and can be located securely by an inner ring, which can be forced to move downwards by a locating ring which is in turn caused to move downwards by a clamping ring capable of being caused to move downwards by an adjustment bolt which can be fastened manually.

Abstract: A wheel support structure of a motor vehicle wherein a double angular bearing 11 is constituted of an outer race 12 integrally installed in one of such members as a hub 9 on which a wheel is mounted and a knuckle 3 to which a suspension arm is installed, inner races 14a and 14b installed in the other, and double rows of balls 13a and 13b inserted between the races; and a lock nut 15 is tightened to compress the inner races 14a and 14b in an axial direction. There is formed a clearance between the inner races 14a and 14b in a no-load condition. The bearing thus constituted is provided with a large rigidity to thereby improve the steering stability of the motor vehicle.

Abstract: A bottom bracket bearing axle mounting structure including a barrel received in the transverse mounting hole of the bottom bracket of a bicycle to hold an axle, a first screw cap threaded into one end of the transverse mounting hole to hold a first ring of balls on a first ball bearing on the axle, and a second screw cap threaded onto one end of the barrel and into an opposite end of the transverse mounting hole to hold a second ring of balls on a second ball bearing on the axle.

Abstract: An upper steering assembly for a bicycle includes a head tube, a steerer tube passing through the head tube, a bearing assembly including a lower and an upper race, the upper race being a ring element and having a vertical inner peripheral surface, mounted on a top of the head tube and around the steerer tube, a rotational socket having a threaded inner periphery and including an upper clamping portion and a lower skirt portion which has an annular groove in an underside thereof for retaining the bearing assembly, the skirt portion having a vertical outer peripheral surface for engaging with the vertical inner peripheral surface of the upper race, and a compression socket mounted around the steerer tube and having a longitudinal slit and including an upper clamping section and a lower tubular section which is in threading connection with the inner periphery of the rotational socket.

Abstract: A fixing device of a bicycle pedal axle comprises an axle tube, an inner sleeve and a threaded casing. The axle tube is fitted into the inner sleeve and provided peripherally at the front end thereof with a bevel tapered surface. The threaded casing is fitted into the axle tube such that an outer threaded portion of the threaded casing engages a threaded end of the axle tube. The threaded casing is provided additionally with a plurality of tangent slots and an inner come engageable with the bevel tapered surface of the inner sleeve.

Abstract: A fastening device of bicycle pedal axle comprises an outer sleeve, a locating sleeve, and a fastening ring. The pedal axle is held securely by the outer sleeve and the locating sleeve, which are in turn fastened securely together by the fastening ring having a plurality of retaining projections which are inserted into the insertion slots of the outer sleeve and the locating sleeve.

Abstract: A locking ring assembly retains a bearing to a shaft rotatably supported on a first axis of rotation. Guide pins extend axially from an annularly shaped bearing retainer slidably disposed on the shaft toward the pressure ring, also slidably on the shaft. A head of the guide pins is slidably disposed and captured in adjusting apertures of the pressure ring. Pressure screws in the adjusting apertures of the pressure ring translate axially in the apertures of the pressure ring when rotated, engaging the guide pin heads to displace the pressure ring from the bearing retainer. The pressure ring reacts against a reaction element disposed on the shaft opposite the bearing retainer to develop an axial thrust load against the bearing.

Abstract: An upper steering assembly for a bicycle includes a head tube, a steerer tube passing through the head tube, a bearing assembly mounted on a top of the head tube and around the steerer tube, a rotational socket having a threaded inner periphery and including an upper clamping portion and a lower skirt portion which has an annular groove in an underside thereof for retaining the bearing assembly, and a compression socket mounted around the steerer tube and having a longitudinal slit and including an upper clamping section and a lower tubular section which is in threading connection with the inner periphery of the rotational socket allowing an adjustment of vertical position of the rotational socket relative to the compression socket.

Abstract: An upper steering assembly for a bicycle includes a lower race mounted on an upper end of a head tube of a bicycle, an upper race above the lower race, ball bearings between the lower and upper races, a compression socket, a ratchet wheel, an outer socket, a compression ring, and an actuating socket. The steerer tube has a longitudinal groove on an upper section thereof. The compression socket is mounted around the steerer tube and has a longitudinal slit in alignment with the longitudinal groove. The ratchet wheel is mounted around the compression socket and has a protrusion projecting radially and inwardly through the slit and received in the longitudinal groove. The outer socket is mounted around the ratchet wheel and has a radial threaded through hole through which a bolt passes to abut on a tooth of the ratchet wheel, such that the ratchet wheel cannot rotate.

Abstract: A locking collar concentric with an inner ring and outer ring of a bearing assembly is advanced axially by threads or other mechanism on an axial extension of the inner ring. A wedge ring provides a wedge between the axial extension and a rotatable shaft upon advancement of the locking collar and grips the shaft. Preferably, conical washers between the axial extension and the locking collar are abutted by the wedge ring to provide further gripping of the shaft upon advancement of the locking collar. The wedge ring may be used alone or in combination with the conical washers to lock the bearing assembly to the shaft.

Abstract: A method is provided for conversion of a permanently assembled ball bearing hub and spindle having ball bearing races constructed directly in the hub and spindle to a serviceable tapered roller bearing hub and spindle assembly. Additionally, the tapered bearing assembly of this invention is provided with grease passageways and a fitting so that the hub assembly may be lubricated with a grease gun without disassembly of the hub assembly.

Abstract: A journal includes a lower cap engaged on a head tube, a bearing engaged on the lower cap, a ring engaged on the bearing and having a tapered surface formed in an inner peripheral portion, a upper cap having an annular groove formed in the lower portion, a tapered surface formed in the annular groove of the upper cap and engaged with the tapered surface of the ring. The upper cap applies a downward and radially outward force against the ring when the upper cap moves toward the lower cap such that lower cap, the bearing, the ring and the upper cap can be stably retained in place.

Abstract: A locking collar concentric with an inner ring and outer ring of a bearing assembly is advanced axially by threads or other mechanism on an axial extension of the inner ring. Conical washers between the axial extension and the locking collar are abutted by an abutment surface. Flattening of the conical washers upon advancement of the locking collar grips the shaft. The conical washers may be sued alone or in combination with a wedge ring to lock the bearing assembly to the shaft.

Abstract: A locking assembly for a bearing, such as a bearing for a rolling mill roll, the roll having a journal for the bearing, the bearing including a cylindrical sleeve member at its outermost end mounted on an axially outer portion of the journal, the end of the sleeve formed to have a radially inward shoulder, and a radially outwardly cylindrical projection, the shoulder having a wedge-shaped cam surface formed at its outer most axial surface, an axially movable outer nut constructed to pass over the journal and having a radially inwardly annular shoulder, the shoulder of the nut having a wedge-shaped cam surface arranged to cooperate with the cam surface of the sleeve shoulder to force the sleeve in an axially inward direction on its rotation when secured to the roll, the nut including several radially outward holes spaced angularly of the axis of the bearing for allowing the nut to be rotated, cooperative openings in the nut and the projection of the sleeve for receiving bolts for securing the nut to the sleeve

Abstract: A crank shaft unit for rotatably mounting bicycle crank arms in a bottom bracket includes, and adapters for maintaining the crank shaft unit in position relative to the bottom bracket. The crank shaft unit includes a crank shaft having connecting projections formed at opposite ends thereof for engaging inside walls of bosses of the crank arms, a cylindrical member surrounding the crank shaft, and bearings for rotatably supporting the crank shaft in inside walls of the cylindrical member. The adapters are mounted between an inside wall of the bottom bracket and the crank shaft unit. At least part of the bosses of the crank arms extend into annular spaces formed between inside walls of the adapter means and the crank shaft. Annular stepped spaces extend from the ambient to surfaces of the crank shaft through the adapters and bosses.

Abstract: A journal for a frame fork of a bicycle including a sleeve engaged on the frame fork and a bearing engaged in an upper portion and a lower portion respectively, the frame fork including an outer thread formed on an upper end, a member threadedly engaged on the upper end of the frame fork and pressing against one of the bearings, and a cut laterally formed in the member such that the member is separated into two portions, a bolt engaged in an aperture formed in the member and perpendicular to the cut for coupling the two portions together.

Abstract: A gear speed reducer having an input shaft formed with a worm which meshs with a worm gear mounted on an output shaft disposed a fixed distance from and at right angles with respect to the input shaft. The worm is provided with an involute thread that progressively becomes thinner from one end to the other end of the worm. An adjustable cartridge rotatably mounts one end of the shaft and the cartridge is adjustably mounted to permit axial adjustment of the shaft to bring a new section of the thread of the worm into engagement with the worm gear to eliminate backlash therebetween. The adjustment is quickly and easily performed without having to remove the reducer from service.

Abstract: A journal including a lower cap engaged on an end portion of a head tube of a bicycle, the lower cap having an annular recess, a bearing engaged in the annular recess of the lower cap, an upper cap threadedly engaged on the upper portion of the front fork and engaged on the bearing so that the front fork is rotatable relative to the head tube, and a compression nut threadedly engaged above the upper cap so that the upper cap can be stably retained in place.

Abstract: A hollow shaft in which an externally threaded portion is forced on an outer periphery of an opening portion at one end of a main body and an engageable groove engageable with a tongue piece of a washer for a bearing is recessedly provided in the axial direction in the externally threaded portion. The engageable groove is recessedly provided to define a remaining wall portion at an outer end of the hollow shaft in the axial direction, whereby a reinforcing ring portion is integrally formed at an outer end portion of the externally threaded portion in the axial direction, the width of the remaining wall portion being set at such a dimension that the washer for the bearing can be coupled into the externally threaded portion.

Abstract: Securing device for a set collar formed with a thread by which it is threadedly secured to a conterpart formed with a corresponding mating thread for adjusting between a stop and a first end face of the set collar an assembly of components engaging the stop, includes a device for retaining the set collar and the counterpart threadedly secured to one another, the retaining device being formed as at least part of a ring tightly engaging the counterpart so as to be fixed against relative rotation therewith and being simultaneously in engagement with a second end face of the set collar disposed on a side of the set collar opposite to a side thereof whereon the first end face thereof is disposed.

Abstract: A support bearing assembly for supporting a jet aircraft engine high speed rotor shaft where an operating temperature of up to 1500 degrees F. is involved and the bearing unit is exposed to such temperature condition, includes a rolling elements-inner and outer race bearing unit capable of operating at such temperature level without adverse effect and, e.g., these components being comprised of ceramic matrix composites. Since such a bearing unit will have different thermal growth than its metallic support housing, the bearing unit is supported in pairs of opposed cylindrical cages, there being an inner cage pair for holding the inner race and an outer cage pair for holding the outer race. The cages have flange means at one end and circularly, spaced support arms extending from the flanges a distance to cage opposite end locations where the support arms are formed as finger structures which interfit with the race members, the spacing between the support arms defining slots in the cage bodies.

Abstract: An assembly and method is provided for properly securing a device such as a bearing, pulley, sheave or the like to a shaft wherein a split tapered adapter is received about the shaft, the adapter having a first end of lesser diameter, a second end of greater diameter, and a tapered surface therebetween, and threads defined about the first end of the adapter, a locknut is in threaded engagement with the first end of the adapter and a device received about the adapter. The locknut has a set of set screws carried therethrough and spaced therearound which are controlled such that the force developed thereby is adequate to clamp the adapter to the shaft and seat the device on the adapter yet is inadequate to move the device toward the second end of the adapter. A second plurality of set screws may be received through said locknut which generate adequate force to move the device up the adapter to achieve a predetermined location of the device.

Abstract: A dry rolling element bearing assembly for rotatably mounting a flight vehicle engine shaft to a housing. Rolling elements (such as ball bearings) are positioned between inner and outer races. Stop devices axial position the inner and outer races. A mounting device positions the inner race radially outward from the shaft so as to create a first annular air space between them. The mount has a flexible portion and has a support ring portion which contacts the outer surface of the inner race with a radial interference fit. A similar mounting device positions the outer race radially inward from the housing. Air directing devices direct cooling air impingingly against bearing surfaces.

Abstract: A support unit serving as a support bearing includes an angular ball bearing. An inner race of the bearing is held by a step portion of a shaft to receive a load in a direction of thrust. An outer race of the bearing has a flange protruding from the outer peripheral surface radially at one end portion of the outer race. The outer race is fixed by a housing by making one end face of the housing abut against the flange. The inner race of the bearing is fixed by clamping a nut which engages a threaded portion of the shaft.

Abstract: An intermittently moving device having an input shaft which a cam is attached to, and an output shaft which has a cam follower to be engaged with the cam and bearings mounted on both side of the cam follower so as to prevent inward movement toward the cam follower. The output shaft is adjustable in axial direction by screwing of adjusting wheels in which the bearings of the output shaft are inserted. The outward end face of the bearings are held by step differences.

Abstract: A device for attachment of a machine member to a shaft, whereby the machine member has an opening for said shaft. The opening has on one hand surface portions of a shape corresponding to the shape of the shaft, cylindrical or tapering, and on the other hand, surface portions having a shape corresponding to the shape of the clamping surfaces of a clamping sleeve, for allowing optional attachment of the machine member directly on the shaft or by means of the clamping sleeve.

Abstract: The present invention includes a rear seal assembly that holds and seals a rotatable shaft extending through the cooling chamber and extending axially outboard through a rear wall in the cooling chamber. In the interior of the cooling chamber, the seal assembly includes a first resilient seal having a coupling section fitted about the shaft and a radially protruding lip section at the base of the coupling section. At the axially outboard end portion of the seal housing, an axially outboard male threaded extension protrudes from a wall abutment surface of the seal housing. The outboardly extending male threaded extension of the seal housing mates with complementary threads in the hole through the rear wall of the cooling chamber. A retaining ring, that is metal in the preferred embodiment, is threaded from the outside of the chamber onto the outwardly extending male threaded extension of the seal housing. The retaining ring has a threaded outer circumference.

Abstract: Cracking of a ceramic bearing fitted over a metal shaft is prevented by grooves on an inner periphery of a ceramic inner race and/or on an outer periphery of the metal shaft.

Abstract: An improved bicycle bottom axle cup assembly comprising a five way pipe, an axle, two cups, two ball bearings, an adjustable connector, a lock ring and a packing ring, and constructed in such way that it can be assembled without any five way pipe and adjusted to meet the need of bottom axles of different lengths.

Abstract: A bearing device for an axle comprises a housing arranged about a portion of the axle, a pair of bearings each having a predetermined clearance mounted between the housing and the axle for rotation of the axle with respect to the housing; two opposed offset pairs of corresponding steps, including a first step of each pair on the outer periphery of the axle, and a second step of each pair on the inner periphery of the housing for positioning the bearings on the axle in the axial direction; and a clamping device for securing the bearings against axial movement on the axle beyond the predetermined clearance.

Abstract: A mower having a plurality of rotary cutting elements each of which is provided with at least one cutting tool. At least one of the rotary cutting element is driven by a transmission means housed in a housing located under the rotary cutting element. The housing is composed of cases in which the rotary cutting elements are guided in rotation, and a brace element determines the distance between each two adjacent cases. The housing is made up of at least one module formed by a case and a brace element formed integrally with the case. The front edge of each of said brace elements is pointed over at least a part of its length. At least said at least one rotary cutting element is mounted on a shaft guided in rotation in the bore of a bearing cylinder.

Abstract: A bicycle sealed bearing kit is used to install sealed bearing units on a bicycle having a one-piece crank. The kit includes an inner race formed of a cylindrical collar having a flange formed at one end thereof. The flange is integrally formed with the collar and extends outwardly in a plane perpendicular to the collar. The inner race has threads on the inner surface thereof for enabling the inner race to be secured to the crank. The sealed bearing unit is mounted on the collar with one thereof juxtaposed with the flange of the inner race.

Abstract: A bearing assembly and method of installing such within an enclosing open walled chamber wherein the bearing assembly utilizes first and second spaced apart bearing units. The bearing units low frictionally rotationally support a crank. The inner races of the spaced apart bearing units are connected together through a sleeve which is located about the crank. Mounted on the outer race of each bearing assembly is an expanding ring assembly. Each expanding ring assembly can be moved into tight engagement with the wall of the chamber.

Abstract: An adjustable shim structure for use between shaft-mounted equipments and aft-support bearings, whereby axial play of the equipments is prevented. The shim structure includes two collars having meshed threads enabling the collars to be rotated relative to one another for adjusting the axial length of the collar assembly. The shaft may be connected to each bearing by means of an expansible plug extending within a circular cavity in the shaft; the plug exerts an outward radial force on the shaft wall, thus expanding the shaft into an interference fit with the associated bearing.